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Chapter 9: Custom Graphics – Creating Your Own Shapes. Page 110
graphsize width, height
Set the graphics output area to the specified height and width.
graphwidth or graphwidth()
graphheight or graphheight()
Functions that return the current graphics height and width for
you to use in your program.
Creating a Custom Polygon:
In previous chapters we learned how to draw rectangles and circles. Often
we want to draw other shapes. The poly statement will allow us to draw a
custom polygon anywhere on the screen.
Let's draw a big red arrow in the middle of the graphics output area. First,
draw it on a piece of paper so we can visualize the coordinates of the vertices
of the arrow shape.
© 2019 James M. Reneau (CC BY-NC-SA 3.0 US)

